# 4 cylinder 30 lbs compression - Tercel Toyota Cars & Trucks

1. Tighten the cylinder head bolts in the sequence shown. Using the 4 step torque turn method, tighten according to the following values:

• • Step 1: All to 34 Nm (25 ft. lbs.)
  • Step 2: All to 68 Nm (50 ft. lbs.)
  • Step 3: All to 68 Nm (50 ft. lbs.)

CAUTION: Do not use a torque wrench for the following step.
Step 4: Turn an additional 1/4 turn

• Step 5: Install and tighten bolts (1-10) in sequence shown, to 41 Nm (30 ft. lbs.) .

1. Tighten bolts (1-10) again to 41 Nm (30 ft. lbs.) PLUS 1/4 turn in sequence shown.
2. Install main bearing bedplate to engine block bolts (11-20), and torque each bolt to 28 Nm (20 ft. lbs.) in sequence shown.

Connecting Rod Cap Bolts 54 Nm (40 ft. lbs.) + 1/4 turn
1997 Jetta: Torque settings..vw..the head, fly wheel, big ends.


1997 Jetta3 1800 feul injection


Vibration Damper/belt Pulley
Tighten 20 Nm (14.8 ft lb) Crankshaft Toothed Belt Sprocket Tighten 90 Nm (66 ft lb) + 90° Camshaft Sprocket Tighten 80 Nm (60 ft lb) Main Bearing Cap
Tighten 65 Nm (48 ft lb) FLYWHEEL TORQUE
Torque 60 Nm. (44 ft. lbs.) + 1/4 turn (90°) [1] [1] Always replace bolts.
CYLINDER HEAD TIGHTENING TORQUE [1] :
1st sequence: 40 Nm (30 ft lb)
2nd sequence: 60 Nm (43 ft lb)
Final sequence: plus 1/2 turn (180°)
Here are some additional specifications, thanks
ntake Manifold
Mounting Bolts 25 Nm (18 ft. lbs.) Bearing Cap Nut 20 Nm (15 ft. lbs.) Rod Bearing Cap
Assembly
Tighten 30 Nm (22 ft lb) + 90° To measure radial clearance
Tighten 30 Nm (22 ft lb) but NOT additional 90° TIGHTENING SPECIFICATIONS
Oil Pump Bolt 20 Nm (14 ft. lbs.) Oil Tube To Block 10 Nm (7 ft. lbs.) Exhaust Manifold to Cyl. Head 25 Nm (18 ft lb) Exhaust Manifold to Front Exhaust Pipe 40 Nm (30 ft lb) Water Pump
TIGHTENING SPECIFICATIONS
Cover Bolts 10 Nm (7 ft. lbs.) Mounting Bolt and Studs 20 Nm (15 ft. lbs.) + 1/4 turn (90°) Pulley Bolts 25 Nm (18 ft. lbs.)

TIGHTENING SPECIFICATIONS
Connecting Rod Nuts:
Tighten In Two Stages:
First Stage 30 Nm (22 ft. lbs.) Second Stage turn an additional 90°(1/4 turn)

Headgasket is blown between those 2 cylinders. Do a compression check on all cylinders probably between 150 - 180 lbs in good condition. Adjacent cylinders will be nil. If there is some pressure, say 50 lbs, check the valve clearances on all cylinders.

The most important part of the compression test result is how even the cylinders are. That is, the lowest cylinder should be at least 80% of the highest. So if the highest was 120 lbs, as long as the lowest is 96 lbs or more, the compression is OK.

The head on the motor you bought is bad; or the head gasket is leaking; or the rings in the 2 center pistons are bad. 30 lbs is far too low of a compression, and 5 lbs is garbage. They should be closer to 80 or 90 psi and not have more that 5% variance between the cylinders.
The first thing you will have to do is pull the head off and check it. Or you can take it back to the salvage yard you got it from, show them the results from the compression test and either get another motor, or have them refund your money.

Quote:





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.

Assuming about cylinder head...



Fig. Front cylinder head bolt torque sequence - 3.5L (VIN H) engine

1. Install the cylinder head with a new gasket.
   
2. Install new M11 bolts and M6 bolts.
   
3. Torque the M11 bolts in sequence to:
   1. Step 1: 30 ft. lbs. (40 Nm).
      
   2. Step 2: 100 degree turn.
      
   3. Step 3: 100 degree turn.
      
   
   
4. Torque the long M6 bolt to 22 ft. lbs. (30 Nm).
5. Torque both shorter M6 bolts to 106 inch lbs. (12 Nm).
6. Install or connect the following:
   Lifters Rocker arms Camshafts Primary chain
7. Remove the timing chain holding tool.
8. Install or connect the following:
   Camshaft covers. Torque the bolts to 80 inch lbs. (9 Nm). Exhaust manifold. Torque the bolts to 22 ft. lbs. (30 Nm). Coolant crossover pipe. Torque the bolts to 18 ft. lbs. (25 Nm). Intake manifold. Torque the bolts to 62 inch lbs. (7 Nm). New oil filter Negative battery cable

Hope helps.

sounds like a Head Gasket or Cracked block or Head allowing coolant into the Engine Cylinder. Do a compression check. If you have Compression on 1, 2 or 3 cylinders that is higher than the rest, 20 to 30 lbs higher, it is most likely the head gasket. If you have high compression on 1 cylinder only then you need to look at the motor or head being cracked. If you purchased the vehicle from a dealer in the last 30 to 90 days, take it back to them and make them fix it.

Check this procedure...

1. Tighten the first design cylinder head bolts as follows:
   1. M11 bolts 1st pass: in sequence to 22 ft. lbs. (30 Nm).
   2. M11 bolts 2nd pass: in sequence + 90 degrees.
   3. M11 bolts (1,2,3,4,5,6,7,8): + 90 degrees.
   4. M11 bolts (9 and 10): + 50 degrees.
   5. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
      
2. Tighten the second design cylinder head bolts as follows:
   1. M11 bolts (1-10) 1st pass: in sequence to 22 ft. lbs. (30 Nm).
   2. M11 bolts (1-10) 2nd pass: in sequence + 90 degrees.
   3. M11 bolts (1-10): + 70 degrees.
   4. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

Fig. Cylinder head bolt tightening sequence-4.8L, 5.3L and 6.0L engines (click for zoom)


Install the cylinder head bolts in sequence to 22 ft. lbs. (30 Nm). The bolts must be tightened once, then be tightened again in sequence in the following order:

1. Step 1: Short length bolt: (3, 4, 7, 8, 11, 12, 15, 16), plus 55 degrees.
2. Step 2: Medium length bolt: (14, 17), plus 65 degrees.
3. Step 3: Long length bolts: (1, 2, 5, 6, 9, 10, 13), plus 75 degrees.

Fig. Cylinder head bolt tightening sequence-5.0L and 5.7L engines

Hello pshep03: My name is Roger and I will help you. There are several things you can look at First is to remove the radiator cap fill radiator. Start the engine with the cap off. Should the engine blow the coolant out immediately on start up. Then the possibility is good the head gasket is blown between the compression area and coolant passage. You could also have a head gasket blown between. cylinders. To check this you need to remove the spark plugs. Using a compression tester. Check the compression in all cylinders. Should two cylinders next to each other have less then 100 lbs. compression. Could be down around 30 to 50 lbs. Then the gasket is likely blown between these two cylinders. The only true way to tell is to remove the head for a through inspection of the head and the gasket.
Should you need further help please just ask. Please rate the answer you received. This way I know it was helpful. THank You for using Fix Ya. Roger

The engine's compression ratio is probably found in your owner's manual and using that along with ~ 14.7 lbs square inch (atmospheric pressure) will yield the nominal pressure:
If compression ratio is 10:1, the nominal cylinder pressure should be ~ 147 lbs.
It isn't uncommon to find lower pressures on higher mileage engines but none of the cylinders should be over 10 lbs apart and they are typically far less than that.